The **TS-04-R** typically refers to a specific model of **Tactile Push Button Switch**. These components are widely used in consumer electronics, automotive controls, and industrial interfaces due to their small footprint and reliable mechanical feedback. --- ### 1. Technical Specifications The TS-04-R is a momentary switch, meaning it only closes the circuit while the button is physically depressed. | Parameter | Specification (Typical) | | :--- | :--- | | **Switch Type** | Tactile (Momentary) | | **Mounting Type** | Through-Hole (THT) or SMD (depends on variant) | | **Operating Force** | 160gf to 250gf (grams-force) | | **Contact Rating** | 50mA @ 12V DC | | **Contact Resistance** | < 100 mΩ | | **Insulation Resistance** | > 100 MΩ @ 100V | | **Travel Distance** | 0.25mm ± 0.1mm | | **Lifespan** | 50,000 to 100,000 cycles | --- ### 2. Internal Components The switch consists of four primary electronic/mechanical parts: 1. **Actuator (Button):** The top part that the user presses. In the "R" series, this is often a round plastic plunger. 2. **Contact Dome:** A precision-engineered metal alloy disc. When pressed, it collapses (providing the "click" feel) and connects the two fixed terminals. 3. **Base (Housing):** Usually made of heat-resistant thermoplastic (LCP or PBT) to withstand soldering temperatures. 4. **Terminals:** Copper alloy pins (often silver-plated) that connect the switch to the PCB. --- ### 3. Circuit Configuration Most TS-04-R switches are **SPST (Single Pole Single Throw)**. Although they often have four pins, they are internally connected in pairs to provide mechanical stability on the PCB. ```text Pin 1 ---[ Switch ]--- Pin 3 | Pin 2 ------+--------- Pin 4 (Note: Pin 1 & 2 are usually tied, and Pin 3 & 4 are usually tied) ``` --- ### 4. Part Number Breakdown (TS-04-R) * **TS:** Tactile Switch series. * **04:** Refers to the physical dimensions (often 6x6mm or 4.5x4.5mm depending on the manufacturer’s catalog). * **R:** Usually indicates **Right Angle** mounting or **RoHS** compliance, depending on the specific manufacturer (e.g., CUI Devices vs. generic brands).